Thony iske



2 SheetsShe et ALBERT ISKE & ANTHONY ISKE.

ELEVATOR.

No. 598,963. Patented Nov. 16, 1897.

(No Model.)

Nirn STATES nnrc.

ATET

ALBERT ISKE AND ANTHONY ISKE, OF LANCASTER, PENNSYLVANIA, ASSIGNORS OF ONE-FOURTH TO G. WV. ANNA AND A. L. THOMAS,

OF SAME PLACE.

SPECIFICATION formingpart of Letters Patent No. 593,963, dated November 16, 1897.

Application filed June 27,1896.

To all whom itmay concern:

Be itknown that we, ALBERT IsKE and AN- THONY ISKE, citizens of the United States, re siding at Lancaster, in the county of Lancaster and State of Pennsylvania, have invented certain new and useful Improvements in Elevators; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide elevators with means for preventing the opening of any door until the elevator-car has reached that landing and also for guarding against the moving up and down of the car while a door remains open.

To this end the said invention consists in the especial construction and combination of devices hereinafter set forth and claimed.

In the accompanying drawings, Figure 1 represents a perspective view of the front part of a car, the door, a part of the elevator-shaft framing, and the attachments embodying our invention. Fig. 2 represents a vertical section taken through the same when the car is opposite one of the doors, said section being on a plane at the side of the catch and releasing device. Figs. 3, 4, and 5 are detail views.

A designates the elevator-shaft framing, B the car moving up and down therein, and O the controlling-rope, while D and D represent the pulleys over which it passes. We do not show the lifting-rope nor the gripping devices, these being well understood. A gear-wheel E turns with pulley D at the bottom of the shaft and is engaged by a locking-stud f on the side of a lever F'When said stud is low.- ered into position therefor. connects this locking-lever B with another lever H, pivoted to a bracket it near the top of the shaft and provided with a weight H,which ordinarily holds the stud f out of such engagement.

I designates the usual sliding elevator-door, one such being at each landing or story. A

. lever J, pivoted to the frame A, has its long end extended through a guide-clamp 2', which is pivoted to the said door, thereby making sliding connection therewith, while its short end is connected by a link K to a bell-crank A jointed rod -G Serial No. 597,181. (No model.)

lever L, also pivoted to said frame, the outer end of said lever being connected to rod G. Plates land are interposed between said levers and said frame to prevent wear and lessen friction. The lower end of rod G is longitudinally slotted at g to receive a stud f on lever F, the slot g allowing for contraction or expansion of said rod under varying temperature.

Lever J has a short rigid third arm or bar J, extending horizontally in the direction of the door while the latter is closed, but necessarily lifted as the dooris opened. Aspringcatch M, set into a recess ofjthe frame, norm ally extends over the said arm or bar J and prevents it from rising, thereby also holding the door closed. A shoulder m on this catch prevents the said arm or bar from descending appreciably below the point of such contact,besides the more important function next stated. An inclined lug N on the front of the lower part of car B comes in contact with this catch M by pressing against its shoulder m when the car stops at a landing and forces the said catch back into its recess, thereby freeing the said arm J and its lever J. The door isnow opened and through the lever J, link K, and lever L forces down the rod G, raising the upper lever I-I against the resistance of its weight H and lowering the lever F until its stud engages the wheel E and locks the cord or rope C, so that the car cannot move up or down thereby raising the said stud out of such looking engagement. As the car ascends the spring-catch is released and again protrudes over the arm J, so that all the doors are locked while the car is between landings and all the doors are locked while the car is at any landing, except the door of that landing only. i It will be observed that these locking and unlocking arrangements are quite beyond the control of the conductor. He absolutely must stop the car at a landing before the door of that landing can be opened, and he is quite unable to move at all from that door until it is closed again.

Having thus described our invention, what we claim as new, and desire to secure by'Letters Patent, is

1. In combination with an elevator-door, a

lever having a sliding connection therewith, a springcatch engaging the said lever to hold the said door closed, and an elevator-carprovided with an attachment arranged to act on the said catch when the car comes opposite the said door, thereby freeing the said lever and permitting the door to open substantially as set forth.

2. In combination with an elevator-door, a lever J attached to the said door, and provided with an arm J, a spring-catch engaging the said arm to hold the door closed and an elevator-car provided with a lug adapted to press against the said catch and free the said arm when the car is opposite the door substantially as set forth.

3. In combination with the controlling-cord of an elevator-car and its pulleys, a toothed wheel carried by one of the said pulleys, a pivoted lever or catch lockin g the said Wheel, a rod extending from said lever, a counterbalance, acting on said rod to free said Wheel, a connection from said lever to said rod, a sliding elevator-shaf t door, alever connected thereto, a spring-catch engaging the said 1ever and an elevator-car provided with a lug which engages the said spring-catch to free the said door when the car is opposite thereto substantially as set forth.

In testimony whereofwe affix our signatures in presence of two Witnesses.

ALBERT ISKE. ANTHONY ISKE. Witnesses:

H. O. SHENcK, A. F. SHENcK. 

